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US20160317437A1 - Eye drops for treating dry eye - Google Patents

Eye drops for treating dry eye Download PDF

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Publication number
US20160317437A1
US20160317437A1 US15/105,353 US201415105353A US2016317437A1 US 20160317437 A1 US20160317437 A1 US 20160317437A1 US 201415105353 A US201415105353 A US 201415105353A US 2016317437 A1 US2016317437 A1 US 2016317437A1
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diclofenac
ophthalmic solution
results
cells
comparative example
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Yuji Takahashi
Tohru MIZUSHIMA
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LTT Bio Pharma Co Ltd
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LTT Bio Pharma Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19—Carboxylic acids, e.g. valproic acid
    • A61K31/195—Carboxylic acids, e.g. valproic acid having an amino group
    • A61K31/196—Carboxylic acids, e.g. valproic acid having an amino group the amino group being directly attached to a ring, e.g. anthranilic acid, mefenamic acid, diclofenac, chlorambucil
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0048—Eye, e.g. artificial tears
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/02—Inorganic compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/10—Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/32—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers, poly(meth)acrylates, or polyvinyl pyrrolidone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/08—Solutions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P27/00—Drugs for disorders of the senses
    • A61P27/02—Ophthalmic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P27/00—Drugs for disorders of the senses
    • A61P27/02—Ophthalmic agents
    • A61P27/04—Artificial tears; Irrigation solutions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00

Definitions

  • the present invention relates to an ophthalmic solution for the treatment of dry eye.
  • Dry eye is a multifactorial chronic disease of tears and corneal and conjunctival epithelia that results in symptoms of eye discomfort and visual disturbance. Dry eye is a major eye disease from which 10 to 20% of adults suffer in the Europe, the U.S., and Japan. The number of patients with dry eye is increasing due to the increased amount of time spent in front of displays, dry air from air conditioning, wearing of contact lenses, and other factors.
  • Dry eye is caused by decreased tear secretion by the lacrimal gland, or increased moisture evaporation of tears associated with lipid and mucin abnormalities, which results in a decreased amount of tears.
  • the decrease in the amount of tears causes chronic irritation or inflammation on the corneal and conjunctival surfaces, leading to a decrease in the quality of life of patients.
  • steroid drugs In order to reduce such inflammation and treat dry eye, steroid drugs have been used. Steroid drugs, however, are not considered to be safe enough to use and tend to cause adverse reactions.
  • NSAIDs nonsteroidal anti-inflammatory drugs
  • Patent Literature 1 discloses an anti-inflammatory ophthalmic solution that contains diclofenac as an active ingredient.
  • Patent Literature 1 JP S58-174310 A
  • the present invention aims to provide an ophthalmic solution for the treatment of dry eye which is used to inhibit apoptosis caused by tear hyperosmolarity.
  • the present invention relates to an ophthalmic solution for the treatment of dry eye, containing diclofenac or a pharmaceutically acceptable salt thereof, the ophthalmic solution being used to inhibit apoptosis caused by tear hyperosmolarity.
  • the diclofenac or pharmaceutically acceptable salt thereof is preferably at a concentration of 0.01 to 0.7% by weight/volume of the ophthalmic solution.
  • the pharmaceutically acceptable salt of diclofenac is preferably diclofenac sodium.
  • the ophthalmic solution preferably further contains polysorbate 80, borax, or polyvinylpyrrolidone.
  • the ophthalmic solution for the treatment of dry eye according to the present invention contains diclofenac or a pharmaceutically acceptable salt thereof, the ophthalmic solution can inhibit apoptosis caused by tear hyperosmolarity and thereby effectively treat dry eye.
  • FIG. 1A is a view showing the results of Example 1 and Comparative Example 1.
  • FIG. 1B is another view showing the results of Example 1 and Comparative Example 1.
  • FIG. 2A is a view showing the results of Example 2 and Comparative Example 2.
  • FIG. 2B is another view showing the results of Example 2 and Comparative Example 2.
  • FIG. 3A is a view showing the results of Example 3 and Comparative Example 3.
  • FIG. 3B is another view showing the results of Example 3 and Comparative Example 3.
  • FIG. 3C is yet another view showing the results of Example 3 and Comparative Example 3.
  • FIG. 4A is a view showing the results of Example 4 and Comparative Example 4.
  • FIG. 4B is another view showing the results of Example 4 and Comparative Example 4.
  • FIG. 4C is yet another view showing the results of Example 4 and Comparative Example 4.
  • FIG. 5A is a view showing the results of Example 5 and Comparative Example 5.
  • FIG. 5B is another view showing the results of Example 5 and Comparative Example 5.
  • FIG. 5C is yet another view showing the results of Example 5 and Comparative Example 5.
  • FIG. 5D is yet another view showing the results of Example 5 and Comparative Example 5.
  • FIG. 5E is yet another view showing the results of Example 5 and Comparative Example 5.
  • FIG. 6 is a view showing the results of Example 6 and Comparative Example 6.
  • FIG. 7 is a view showing the results of Example 7 and Comparative Example 7.
  • FIG. 8 is a view showing the results of Example 8 and Comparative Example 8.
  • FIG. 9 is a view showing the results of Example 9 and Comparative Example 9.
  • FIG. 10 is a view showing the results of Example 10 and Comparative Example 10.
  • the present invention relates an ophthalmic solution for the treatment of dry eye, containing diclofenac or a pharmaceutically acceptable salt thereof, the ophthalmic solution being used to inhibit apoptosis caused by tear hyperosmolarity.
  • the concentration of the diclofenac or pharmaceutically acceptable salt thereof in the ophthalmic solution is preferably 0.01 to 0.7% by weight/volume, more preferably 0.05 to 0.5% by weight/volume.
  • a concentration of lower than 0.01% by weight/volume tends to lead to reduced treatment effects. With a concentration of higher than 0.7% by weight/volume, the composition tends to be difficult to prepare.
  • Examples of the pharmaceutically acceptable salt of diclofenac include diclofenac sodium and diclofenac potassium.
  • the pH of the ophthalmic solution is preferably 6.0 to 8.5, more preferably 7.0 to 8.0.
  • a pH of lower than 6.0 tends to fail to relieve eye irritation, while a pH of higher than 8.5 is out of the physiological pH range.
  • the osmotic pressure ratio of the ophthalmic solution is preferably 0.9 to 1.4.
  • the osmotic pressure ratio as used herein refers to the osmotic pressure ratio relative to physiological saline.
  • the ophthalmic solution of the present invention containing diclofenac or a pharmaceutically acceptable salt thereof may further contain a buffer, isotonizing agent, preservative, thickener, solubilizer, and detergent.
  • the buffer examples include combinations of phosphoric acid and salts of phosphoric acid, a combination of boric acid and borax, and combinations of organic acids and salts of organic acids. Among these, the combination of boric acid and borax is preferred.
  • the buffer content in the ophthalmic solution is preferably 0.01 to 10% by weight/volume, more preferably 0.1 to 3% by weight/volume. With a buffer content of lower than 0.01% by weight/volume, the resulting effect of the present invention tends to be less sufficient. A buffer content of higher than 10% by weight/volume tends to cause eye irritation.
  • the isotonizing agent examples include sugars such as glucose, propylene glycol, glycerol, sodium chloride, potassium chloride, and sugar alcohols such as mannitol, sorbitol, and xylitol. Among these, sodium chloride or potassium chloride is preferred.
  • the isotonizing agent content in the ophthalmic solution is preferably 0.01 to 10% by weight/volume, more preferably 0.1 to 3% by weight/volume.
  • the preservative examples include invert soaps such as benzalkonium chloride, benzethonium chloride, and chlorhexidine gluconate; parabens such as methylparaben, ethylparaben, propylparaben, and butylparaben; and alcohols such as chlorobutanol, phenylethyl alcohol, and benzyl alcohol. Among these, chlorobutanol is preferred.
  • the preservative content in the ophthalmic solution is preferably 0.001 to 0.5% by weight/volume.
  • thickener examples include polyvinylpyrrolidone, methylcellulose, hydroxypropyl methylcellulose, and hydroxypropyl cellulose. Among these, polyvinylpyrrolidone is preferred.
  • solubilizer examples include polysorbate 80 (polyoxyethylenesorbitan monooleate, trade name: Tween 80), polyoxyethyleneoxystearic acid triglyceride, polyethylene glycol, and ⁇ - or ⁇ -cyclodextrin. Among these, polysorbate 80 is preferred.
  • the ophthalmic solution may contain a calcium salt or a magnesium salt in order to relieve eye irritation.
  • these salts include calcium salts such as calcium pantothenate, calcium chloride, calcium propionate, calcium acetate, calcium lactate, and calcium gluconate, and corresponding magnesium salts.
  • calcium pantothenate, calcium chloride, and magnesium chloride are preferred.
  • the ophthalmic solution of the present invention preferably contains polysorbate 80, borax, or polyvinylpyrrolidone, among the above components that can be combined, to enhance the effect of inhibiting apoptosis caused by hyperosmolarity.
  • the concentration of polysorbate 80 in the ophthalmic solution is preferably 0.1 to 5.0% by weight/volume, more preferably 0.3 to 3.0% by weight/volume.
  • the concentration of borax in the ophthalmic solution is preferably 0.1 to 20.0% by weight/volume, more preferably 0.3 to 15.0% by weight/volume.
  • the concentration of polyvinylpyrrolidone in the ophthalmic solution is preferably 1.0 to 15.0% by weight/volume, more preferably 2.0 to 10.0% by weight/volume.
  • the present invention relates to an ophthalmic solution for the treatment of dry eye which is used to inhibit apoptosis caused by tear hyperosmolarity, among other ophthalmic solutions.
  • dry eye is associated with a decrease in the amount of tears, resulting in increased tear osmolarity. This increase puts the cells under osmotic stress, where efflux of water from the cells occurs, resulting in shrinkage of the cells.
  • the cells respond to the stress by taking up extracellular ions such as sodium ions, which increases the intracellular ionic strength, thereby causing apoptosis of the cells.
  • Ocular tissues in which apoptosis can occur include the cornea, conjunctiva, and lacrimal gland. More specifically, cells in which apoptosis can occur include corneal epithelial cells, conjunctival epithelial cells, and lacrimal-gland cells.
  • the diclofenac used in the ophthalmic solution of the present invention inhibits apoptosis even with hyperosmotic tears, by promoting the expression and nuclear translocation of the nuclear factor of activated T-cells 5 (NFAT5) gene.
  • NFAT5 gene products activate the betaine/GABA transporter-1 (BGT-1) gene and other genes. This allows the cells to respond to the osmotic stress by taking up organic osmolytes which do not affect the ionic strength. Thus, an increase in the ionic strength in the cells can be avoided, and therefore it is considered that apoptosis is inhibited even with hyperosmotic tears.
  • the ophthalmic solution of the present invention exhibits the effect of inhibiting apoptosis in the cornea, conjunctiva, and lacrimal gland caused by tear hyperosmolarity. More specifically, the ophthalmic solution of the present invention exhibits the effect of inhibiting apoptosis in corneal epithelial cells, conjunctival epithelial cells, and lacrimal-gland cells.
  • the ophthalmic solution of the present invention preferably one to three drops, more preferably one to two drops, are instilled in each eye per application. Moreover, the volume of drops instilled in each eye per application is preferably 10 to 300 ⁇ L, more preferably 20 to 200 ⁇ L, still more preferably 30 to 100 ⁇ L.
  • the dosage interval of the ophthalmic solution of the present invention is preferably one to six times daily, more preferably one to three times daily.
  • HCE cells Human corneal epithelial cells
  • the hyperosmotic conditions of each medium were created by 150 mM NaCl, 280 mM glucose, or 280 mM sorbitol.
  • the number of viable cells was measured by MTT assay, and the absorbance was calculated relative to the control (under isotonic conditions).
  • the results are shown in FIG. 1A and FIG. 1B .
  • Example 1 The same procedure as in Example 1 was followed, except that other nonsteroidal anti-inflammatory drugs (NSAIDs) were used in place of diclofenac. The results are shown in FIG. 1A .
  • NSAIDs nonsteroidal anti-inflammatory drugs
  • NSAIDs nonsteroidal anti-inflammatory drugs
  • diclofenac was highly effective in reducing cytotoxicity under hyperosmotic conditions.
  • Example 2 The same procedure as in Example 2 was followed, except that bromfenac was used in place of diclofenac. The results are shown in FIG. 2A and FIG. 2B .
  • diclofenac was effective in inhibiting apoptosis under hyperosmotic conditions and further exhibited a cell proliferative effect.
  • HCE cells were incubated in hyperosmotic media containing diclofenac, 150 mM NaCl, and/or PGE 2 for 24 hours. The number of viable cells was measured by MTT assay, and the absorbance data were expressed as relative values to that of the control (under isotonic conditions). The results are shown in FIG. 3A and FIG. 3C .
  • HCE cells were pre-incubated in media containing diclofenac for 30 minutes, and then incubated in media containing 10 ⁇ M arachidonic acid and diclofenac.
  • the arachidonic acid was added to induce PGE 2 .
  • the amount of PGE 2 contained in each culture was measured by EIA. The results are shown in FIG. 3B .
  • Example 3 The same procedure as in Example 3 was followed, except that bromfenac was used in place of diclofenac. The results are shown in FIGS. 3A to 3C .
  • the number of viable cells did not change with PGE 2 as shown in FIG. 3A .
  • the concentration of diclofenac required to reduce PGE 2 was 0.1 nM as shown in FIGS. 3B and 3C , whereas the concentration required to reduce cytotoxicity caused by hyperosmolarity was 100 nM as shown in FIG. 3C .
  • inflammation is generally known to be caused by increased production of prostaglandin E 2 (PGE 2 ) through cyclooxygenase (COX)
  • the results in FIGS. 3A to 3C demonstrated that the effect produced by diclofenac is independent of the effect of inhibiting COX to lower the PGE 2 expression level.
  • HCE cells were incubated in hyperosmotic media containing diclofenac and 150 mM NaCl for six hours ( FIG. 4A and FIG. 4C ) or for one hour ( FIG. 4B ).
  • Each whole cell homogenate ( FIG. 4A and FIG. 4B ) or nuclear extract ( FIG. 4B ) was analyzed by immunoblotting using an anti-NFAT5, anti-actin, or anti-lamin B antibody.
  • the intensity of the NFAT5 band was measured and expressed as relative values to that of the control (under isotonic conditions without diclofenac) ( FIG. 4A and FIG. 4B ).
  • the relative bgt1 mRNA expression level was measured by real-time RT-PCR, and the values normalized by the actin expression level are expressed as relative values to that of the control (under isotonic conditions without diclofenac) ( FIG. 4C ).
  • Example 4 The same procedure as in Example 4 was followed, except that bromfenac was used in place of diclofenac. The results are shown in FIGS. 4A to 4C .
  • the lacrimal gland of a rat was removed to prepare a dry eye model.
  • an ophthalmic solution (5 ⁇ l) containing diclofenac (0.1%, 3.1 mM) was administered three times a day.
  • the amount of tears was measured by the cotton thread test.
  • the results are shown in FIG. 5A .
  • the images of the cornea stained with fluorescein are shown in FIG. 5B .
  • the fluorescein scores calculated are shown in FIG. 5C .
  • the numbers of TUNEL positive cells are shown in FIG. 5E .
  • the values are represented as average ⁇ S.E.M., with a single asterisk (*) indicating P ⁇ 0.01 and n.s. meaning “not significant”.
  • Example 5 The same procedure as in Example 5 was followed, except that bromfenac was used in place of diclofenac. The results are shown in FIGS. 5A to 5E .
  • HCE cells were pre-incubated in media containing 0 ⁇ g/ml, 1 ⁇ g/ml, or 10 ⁇ g/ml polysorbate 80 for 24 hours.
  • the HCE cells were further incubated for 24 hours in hyperosmotic media containing 1 ⁇ M diclofenac, 150 mM NaCl, and polysorbate 80 at the same concentration as that in the pre-incubation.
  • the number of viable cells was measured by MTT assay, and the results are shown in FIG. 6 .
  • Example 6 The same procedure as in Example 6 was followed, except that diclofenac was not used. The results are shown in FIG. 6 .
  • HCE cells were pre-incubated in media containing 0 ⁇ g/ml, 4 ⁇ g/ml, or 40 ⁇ g/ml borax for 24 hours. The HCE cells were further incubated for 24 hours in hyperosmotic media containing 1 ⁇ M diclofenac, 150 mM NaCl, and borax at the same concentration as that in the pre-incubation. The number of viable cells was measured by MTT assay, and the results are shown in FIG. 7 .
  • Example 7 The same procedure as in Example 7 was followed, except that diclofenac was not used. The results are shown in FIG. 7 .
  • HCE cells were pre-incubated in media containing 0 ⁇ g/ml, 10 ⁇ g/ml, or 100 ⁇ g/ml povidone for 24 hours. The HCE cells were further incubated for 24 hours in hyperosmotic media containing 1 ⁇ M diclofenac, 150 mM NaCl, and povidone at the same concentration as that in the pre-incubation. The number of viable cells was measured by MTT assay, and the results are shown in FIG. 8 .
  • Example 8 The same procedure as in Example 8 was followed, except that diclofenac was not used. The results are shown in FIG. 8 .
  • HCE cells were pre-incubated in a medium containing 1 ⁇ g/ml combined ophthalmic solution for 24 hours. The HCE cells were further incubated for 24 hours in a hyperosmotic medium containing 3 ⁇ M combined ophthalmic solution and 150 mM NaCl. The number of viable cells was measured by MTT assay. Additionally, the same procedure was followed, but using diclofenac instead of the combined ophthalmic solution. The results are shown in FIG. 9 .
  • the combined ophthalmic solution is an ophthalmic solution having the composition shown in Formulation 3.
  • Example 9 The same procedure as in Example 9 was followed, except that diclofenac or the combined ophthalmic solution was not used (CTRL), or a buffer was used (Vehicle). The results are shown in FIG. 9 .
  • the lacrimal gland of a rat was removed to prepare a dry eye model.
  • an ophthalmic solution (5 ⁇ l) containing diclofenac (0.05%, 1.55 mM; or 0.1%, 3.1 mM) was administered three times a day.
  • the tears were subjected to fluorescein staining, and the fluorescein score was calculated. The results are shown in FIG. 10 .
  • Example 10 The same procedure as in Example 10 was followed, except that a buffer was used (Vehicle) in place of diclofenac. The results are shown in FIG. 10 .
  • Diclofenac sodium (100 mg), borax (573 mg), boric acid (868 mg), sodium chloride (290 mg), and ⁇ -cyclodextrin (100 mg) are dissolved in distilled water (about 80 ml). Then, calcium lactate (150 mg) is added to and dissolved in the solution. The resulting solution is diluted with distilled water to 100 ml and filtered, whereby an ophthalmic solution is prepared.
  • Diclofenac sodium (100 mg), NaH 2 PO 4 (anhydrous) (200 mg), Na 2 HPO 4 (anhydrous) (710 mg), sodium chloride (300 mg), and ⁇ -cyclodextrin (1000 mg) are dissolved in distilled water (about 80 ml). Then, calcium pantothenate (150 mg) is added to and dissolved in the solution. The resulting solution is diluted with distilled water to 100 ml and filtered, whereby an ophthalmic solution is prepared.
  • Diclofenac sodium (100 mg), borax (450 mg), boric acid (1500 mg), chlorobutanol (500 mg), polyvinylpyrrolidone K25 (3000 mg), and polysorbate 80 (Tween 80) (500 mg) are dissolved in sterile purified water to give a total amount of 100 ml. Thus, an ophthalmic solution is prepared.

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US11000530B2 (en) * 2017-09-01 2021-05-11 Murray And Poole Enterprises Ltd Methods and compositions for the treatment of ophthalmic conditions
US20200030226A1 (en) 2018-07-27 2020-01-30 Johnson & Johnson Consumer Inc. Botanical and bacterial extracts displaying retinol-like activity
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